Update specifications/common/common.protocol.md

Author: juliapampus

specifications/common/common.protocol.md

@@ -33,7 +33,7 @@ Protocol version, it must terminate the communication. The version endpoint MUST
 ### HTTPS Binding
 
 When using the DSP HTTPS binding, the `path` property is an absolute URL path segment to be appended to `<root>` for
-discovery of all endpoints of this version. The concatenation of `<root>` and `path` yields `<base>`
+discovery of all endpoints of this version. The concatenation of `<root>` and `path` yields `<base>`.
 
 The following example demonstrates that a [=Connector=] offers the HTTPS binding from version `2024-1` at
 `<root>/some/path/2024-1`, the `2025-1` endpoints at `<root>/some/path/2025-1` and another [=Connector=] on the same